### Overview The pending-changes review UI lists auto-saved drafts per translation: one row per langcode. Acting on a non-default translation row currently misbehaves — discarding deletes the default language instead (#3591703), and publishing a subset of translations corrupts the unselected ones. As an interim step for Symmetric Translation Phase 1, the review UI should list only the default-language entity for each pending change and hide per-translation rows. This prevents editors from triggering the per-translation discard and partial-publish paths until the langcode-aware endpoints land, so #3591703 no longer blocks this milestone. ### Proposed resolution When building the pending-changes review list, collapse per-translation auto-saves to a single default-language row per entity. Publishing or discarding that row acts on the entity as a whole. Per-translation discard and publish stay disabled in the UI until #3591703 adds the langcode-aware endpoints. ### User interface changes The pending-changes review list shows one row per entity (its default language) instead of one row per translation.